That's not always easy to teach grammar, isn't? Here's a colourful worksheet of 3 pages to help you teach about the present tense for beginners. It explains the formation and use of the present tense for regular verbs and être and avoir. You'll find the regular formation for the 3 groups of verbs but also the main irregular ones (1st person singular) and exercises to practise. I suggest you use the presentation for more interactivity with your students.
Find the bundle and presentation lesson here:
Present simple bundle
Present simple presentation